Input validation error in Linux kernel - CVE-2009-2849
Published: August 19, 2009 / Updated: September 19, 2017
Vulnerability identifier: #VU93725
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2009-2849
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The md driver (drivers/md/md.c) in the Linux kernel before 2.6.30.2 might allow local users to cause a denial of service (NULL pointer dereference) via vectors related to 'suspend_* sysfs attributes' and the (1) suspend_lo_store or (2) suspend_hi_store functions. NOTE: this is only a vulnerability when sysfs is writable by an attacker.
How to mitigate CVE-2009-2849
Install update from vendor's website.
Sources
- http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.30.y.git;a=commit;h=3c92900d9a4afb176d3de335dc0da0198660a244
- http://lists.vmware.com/pipermail/security-announce/2010/000082.html
- http://secunia.com/advisories/36501
- http://secunia.com/advisories/37105
- http://secunia.com/advisories/38794
- http://secunia.com/advisories/38834
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.30.2
- http://www.openwall.com/lists/oss-security/2009/07/24/1
- http://www.openwall.com/lists/oss-security/2009/07/26/1
- http://www.securitytracker.com/id?1022961
- http://www.ubuntu.com/usn/USN-852-1
- http://www.vupen.com/english/advisories/2010/0528
- http://xorl.wordpress.com/2009/07/21/linux-kernel-md-driver-null-pointer-dereference/
- https://exchange.xforce.ibmcloud.com/vulnerabilities/52858
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10396
- https://rhn.redhat.com/errata/RHSA-2009-1540.html
- https://www.redhat.com/archives/fedora-package-announce/2009-August/msg01256.html